Algorithm to loop through the color spectrum?

Newbie & Debugging Questions
#1

Anyone have an algorithm to loop through the color spectrum? I cant seem to figure it out myself.

#2

Hmm. To be honest I’d just create this in your graphics program of choice and blit it as an image :smiley:

Bach

#3 



import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.util.Random;
import javax.swing.JFrame;
import javax.swing.JPanel;

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

/**
 *
 * @author David
 */
public class DrawPaletteShiz {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) throws Throwable {
		JFrame jf = new JFrame("Frame");
		final Dimension size = new Dimension(100,100);
		JPanel jp = new JPanel() {

			@Override
			public void paint(Graphics g) {
				float f = new Random().nextFloat();
				for (int i = 0; i < size.width; i++) {
					for (int j = 0; j < size.height; j++) {
						g.setColor(Color.getHSBColor(f, 1.0f-(float)i/size.width, 1.0f-(float)j/size.height));
						g.drawLine(i,j,i,j);
					}
				}
				for (int i = 0; i < size.height; i++) {
					g.setColor(Color.getHSBColor((float)i/size.height,1.0f,1.0f));
					g.drawLine(100,i,130,i);
				}
			}

		};
		jf.setResizable(false);
		jp.setPreferredSize(new Dimension(size.width+30,size.height));
		jf.getContentPane().add(jp);
		jf.pack();
		jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		jf.show();
		while (true) {
			jp.repaint();
			Thread.sleep(10);
		}
    }

}

have fun brah

#4

Wow thanks for that. I will put it to great use! :slight_smile: